RFR(M): 8020775: PPC64 (part 12): posix signal printing

David Holmes david.holmes at oracle.com
Sun Aug 18 21:01:14 PDT 2013

On 17/08/2013 3:47 AM, Coleen Phillimore wrote:
> On 8/16/2013 1:12 PM, Vladimir Kozlov wrote:
>> David,
>> On 7/28/13 7:46 PM, David Holmes wrote:
>>> On 26/07/2013 9:11 AM, Lindenmaier, Goetz wrote:
>>>> Hi,
>>>> we'd like to contribute our posix signal printing.
>>> This really isn't "posix signals" as it combines all the OS specific
>>> signal definitions into one chunk of code.
>> Currently it is the only place in our sources where we can combine
>> code for all unix variations.
> Yes, we're renaming "posix" to "xnix", so it's good to not duplicate the
> code in all the unix variations with this change, just because it's not
> "posix".

Even so I hate to see supposedly shared/platform-independent code full 
of platform specific stuff. :(

But I'll shut up now.


> Coleen
>>> + // A number high enough to contain all possible signal numbers.
>>> + #define MAX_SIGNAL_NUMBER 70
>>> Why do you need this when you use sigaddset to check validity anyway?
>>> What is this "maximum signal number" meant to represent anyway? The
>>> maximum signal number on the platform, or the maximum signal number for
>>> a signal that the JVM will install a handler for?
>>> The runtime team will need to take a good look at this. Personally I'd
>>> rather not see all the different OS stuff piled in together. I'd
>>> certainly like to see as little duplication as possible, but I'd rather
>>> platform specific stuff was dealt with in platform specific files.
>> It is just printing unification to avoid a lot of duplication.
>> I agree that methods is_valid_signal() could stay in platform specific
>> files. But to have the rest, signals names and print methods, in one
>> place I think is good.
>> Regards,
>> Vladimir
>>> David
>>> -----
>>>> We implemented some routines to print signal and sa_flags information
>>>> in the os/posix files, and call them from
>>>> os::print_siginfo and print_signal_handler() in the various unix
>>>> variant directories.
>>>> The output is a bit more verbose than the existing version.
>>>> We contribute this here, as our aix code uses this too.
>>>> Please review this and test it if you think we should add this.
>>>> We'd appreciate it.
>>>> http://cr.openjdk.java.net/~goetz/webrevs/8020775-print_sig/
>>>> Thanks and best regards,
>>>>    Goetz.

More information about the hotspot-dev mailing list